Fender Gain Mod

Cautionary Statement:

Amplifiers contain voltages high enough to Kill you even after the amp has been powered Off !!! If you don't have enough electronic experience to identify and discharge the Filter Capacitors which contain these Deadly voltages, take your amp to a Qualified tech. If you don't know a qualified tech in your area, post a request in the alt.guitar.amps newsgroup, the folks there will be happy to help you.

The Mod:

If, like most people, you only use the Vibrato/Reverb Channel of your Dual Channel Fender amp. The following solder free mod will increase the Gain characteristics of your amp.

1. Simply remove the first preamp tube on the right (as you look into the back of the amp).

Tubes in a dual channel amp share a common power supply. The more tubes you have, the more current is drawn, and the more the voltage drops in the power supply. Removing the one tubes drops the amount of current being drawn, the voltage rises in the power supply, and this in turn causes the remaining pre-amp tubes to run a little hotter. Which effectively increases the overall gain.